body{
    text-align:center;
}

.header{
    position:fixed;
    left:0;top:0;
    width:80%;
    height:20px;
    line-height:20px;
    background:#000;
    padding:0 10%;
    z-index:10000;
}

.header h1{
    color:#fff;
    font-size:20px;
    font-weight:600;
    text-align:center;
}
.install-box{
    margin:60px auto 0;
    background:#fff;
    border-radius:10px;
    padding:26px;
    overflow:hidden;
    box-shadow: 5px 5px 10px #ff5060;
    display:inline-block;
    width:760px;
    min-height:500px;
}
.protocol{
    text-align:left;
    height:360px;
    overflow-y:auto;
    padding:15px;
    color:#333;
}
.protocol h2{
    text-align:center;
    font-size:16px;
    color:#000;
}
.step-btns{
    padding:20px 0 10px 0;
}
.copyright{
    padding:25px 0;
}
.copyright,.copyright a{
    color:#ccc;
}